CN109092910A - A kind of method electromagnetic induction coil compensation heating equipment and its improve mill bar quality - Google Patents
A kind of method electromagnetic induction coil compensation heating equipment and its improve mill bar quality Download PDFInfo
- Publication number
- CN109092910A CN109092910A CN201810821895.3A CN201810821895A CN109092910A CN 109092910 A CN109092910 A CN 109092910A CN 201810821895 A CN201810821895 A CN 201810821895A CN 109092910 A CN109092910 A CN 109092910A
- Authority
- CN
- China
- Prior art keywords
- induction coil
- electromagnetic induction
- intermediate base
- heating
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- General Induction Heating (AREA)
Abstract
The method for compensating heating the present invention relates to a kind of electromagnetic induction coil compensation heating equipment and its in steel rolling process through electromagnetic induction coil to improve mill bar quality.1~3 group of electromagnetic induction coil is set between roughing mills or between roughing mills and mm finishing mill unit, intermediate base is transported into heating in electromagnetic induction coil, the speed of service of the intermediate base in electromagnetic induction coil is 0.3~3m/s, when intermediate base head enters electromagnetic induction coil, the power of electromagnetic induction coil is 500~1500KWh, and with the operation of intermediate base, the power of electromagnetic induction coil is gradually increased, when intermediate base tail portion is left, the power of electromagnetic induction coil increases to 3000~10000KWh.Using method of the invention, solve the problems, such as that intermediate base head and tail temperature difference is big, slab, which goes out furnace temp, reduces by 50~80 DEG C, slab time inside furnace reduces by 5~10min, slab amount of oxidation loss can reduce by 30% or more, and the crystallite dimension of stocking reduces, and the intensity and toughness of stocking improve.
Description
Technical field
The invention belongs to steel rolling technical field, a kind of electromagnetic induction coil compensation heating equipment is provided and its is improved and is rolled
The method of material amount.In particular it relates to which a kind of electromagnetic induction coil compensates heating equipment and its in steel rolling stream
The method heated to improve mill bar quality is compensated by electromagnetic induction coil in journey.
Background technique
In rolling process, in order to mitigate mill load and improve rolling efficiency, most of steel rolling mill is according to steel under high temperature
Slab is heated to sufficiently high temperature in heating furnace, but used by the small theory of resistance of deformation, the method for taking high temperature rolling
The method of high-temperature heating will cause the raising of slab burn out rate, according to written " hot rolling the zerolling technology " (" steel of Huang Chuanqing et al.
Iron " volume 32, in October, 1991) it is described, Baosteel 2050mm hot continuous rolling slab routine tapping temperature is 1250 DEG C, due to going out furnace temperature
Austenite caused by degree is high, and oxidization burning loss rate is up to 0.8% or more, causes very big waste, and slab heating temperature is excessively high
Excessive grain is coarse also to bring adverse effect to final finished quality.
When intermediate base enters first finishing mill, the temperature change most serious of intermediate base length direction, because intermediate
The head of base is sent to used in the typically less than intermediate base tail portion of time used in first finishing mill from the last roughing mill
Time, the thermal radiation loss time of tail portion is than head length, if taken no action to reduce temperature drop, according to [GinzburgVB,
SchmiedbergWF.Iron and Steel Engineer, April, 1986:29~39] described: for a unit volume weight
For the coil of strip of 17.86kg/m, head and tail temperature difference of the intermediate base in finish rolling inlet is likely to be breached 148.9 DEG C, this temperature difference pair
Stocking template and quality bring adverse effect.
In rolling process, being influenced by roll cooling water, de-scaling water and heat loss through radiation, the temperature drop on stocking surface is larger,
And the temperature drop inside stocking is smaller, there are 100~200 DEG C of the temperature difference in the inside and surface of intermediate base.
In conclusion furnace temperature of heating furnace is excessively high to will cause that slab oxidization burning loss is serious, and austenite grain is coarse, while steel rolling
When there are intermediate base head and tail temperature differences big, the surface and big phenomenon of internal difference in temperature.
Summary of the invention
In view of the above problems, the present invention compensates the method for heating to intermediate base by electromagnetic induction coil to improve
The method of mill bar quality.This method is suitable for the rolling of square billet and rectangular bloom.
This method solves furnace temperature of heating furnace mistake using electromagnetic induction coil compensation heating and heating furnace cold melt technology
The problem that slab oxidization burning loss is serious caused by height, austenite grain is coarse, is solved using the skin effect of electromagnetic induction heating
Certainly intermediate base surface and the big problem of internal difference in temperature, at the same electromagnetic induction coil using different heating powers to the head of intermediate base
Portion and tail portion are heated to solve the problems, such as that intermediate base head and tail temperature difference is big.
The present invention provides a kind of electromagnetic induction coil, and electromagnetic induction coil is formed by metal spool coiling, electromagnetic induction line
The both ends of circle are separately connected inlet and outlet.
Preferably, the rated power of electromagnetic induction coil is 3000~10000KWh, and frequency is 300~1000HZ, circle
Number is 10~50 circles, and turn-to-turn is away from for 8~12mm.
Preferably, the outer cross section of the metal spool is hollow, rectangular.The metal spool outer cross section specification be (50~
70) mm × (20~40) mm, the wall thickness of metal spool are 5~10mm.
The present invention also provides the application method of the electromagnetic induction coil, in electromagnetic induction coil use process, to hollow
Water flowing is cooling in the metal spool of rectangle, and the both ends of electromagnetic induction coil are separately connected inlet and outlet, in entery and delivery port
The temperature difference of water flow is less than 20 DEG C.Water inlet (8) connects water inlet system (10), and water outlet (9) connects outlet system (11), water inlet system
System (10) and water inlet system (10) are all made of the prior art, and the equipment for being able to achieve inflow and outflow can be used.
The present invention provides a kind of equipment of intermediate base compensation heating, including 1~3 group of electromagnetic induction coil, electromagnetic induction line
Circle is arranged on the operating path of intermediate base, and intermediate base enters in electromagnetic induction coil after a frame or the rolling of a few frame roughing mills
It being heated, during passing through electromagnetic induction coil, the heating power of electromagnetic induction coil gradually linearly increases intermediate base,
To achieve the effect that gradually increase from the head of intermediate base to Tail-heating amplitude.
Preferably, 1~3 group of electromagnetic induction line is set between roughing mills or between roughing mills and mm finishing mill unit
Circle, the axial direction of electromagnetic induction coil are the traffic direction of intermediate base.
Preferably, in order to the influence of the irregular deformations to electromagnetic induction coil such as eliminate nose that intermediate base occurs, arch upward,
A pair of of straightening roll (3) is respectively set in the front and back of electromagnetic induction coil, to prevent intermediate base from scratching electromagnetic induction coil.
Preferably, in order to eliminate the influence of roll cooling water or de-scaling water to electromagnetic induction coil, in electromagnetic induction coil
Front and back a pair of of water fender (2) is respectively set, each pair of water fender is arranged up and down perpendicular to intermediate base, water fender and intermediate base
Gap be 10~20mm, to prevent from causing short circuit on roll cooling water or de-scaling water spray to electromagnetic induction coil.
The present invention also provides a kind of to compensate heating to intermediate base to improve mill bar quality using electromagnetic induction coil
Method, which is characterized in that
After compensating heating to intermediate base using electromagnetic induction coil, rolling mill practice is arranged are as follows: slab goes out to heat
Furnace temperature is 1000~1050 DEG C, and the time inside furnace of slab in heating furnace is 60~65min, between roughing mills or thick
1~3 group of electromagnetic induction coil is set between milling train group and mm finishing mill unit, intermediate base is transported into heating in electromagnetic induction coil, in
Between the speed of service of the base in electromagnetic induction coil be 0.3~3m/s, when intermediate base head enters electromagnetic induction coil, electromagnetism sense
The power for answering coil is 500~1500KWh, and with the operation of intermediate base, the power of electromagnetic induction coil is gradually increased, intermediate
When base tail portion is left, the power of electromagnetic induction coil increases to 3000~10000KWh.
Advantages of the present invention:
1, after compensating heating to intermediate base using electromagnetic induction coil, slab goes out furnace temp can be than original work
Skill reduces by 50~80 DEG C, and the time inside furnace of slab in heating furnace can reduce by 5~10min than original technique, due to adding for slab
Hot temperature reduces, heating time is reduced, and slab amount of oxidation loss can reduce by 30% or more, and the tendency of growing up of austenite grain is prolonged
Slow or stopping, the crystallite dimension of final stocking can also reduce, and can improve the intensity and toughness of stocking.
2, during passing through in electromagnetic induction coil, the power of electromagnetic induction coil is gradually increased intermediate base, from base
The heating temperature of head to base tail gradually rises, and can solve the big problem of intermediate base head and tail temperature difference.
3, it during heating intermediate base using electromagnetic induction coil, is influenced by skin effect, current convergence is in centre
The thin layer of base appearance, closer to intermediate base surface, current density is bigger, and actually electric current is smaller inside intermediate base, so that intermediate
The increasing extent of temperature on base surface is greater than internal increasing extent of temperature, can solve intermediate base surface and the big problem of internal difference in temperature.
Detailed description of the invention:
Fig. 1 is the equipment arrangement schematic diagram for compensating heating to intermediate base using electromagnetic induction coil.
Fig. 2 is the sectional view of coiling electromagnetic induction coil metal spool.
Fig. 3 is electromagnetic induction coil schematic diagram.
Wherein 1 are as follows: roll, 2 are as follows: water fender, 3 are as follows: straightening roll, 4 are as follows: electromagnetic induction coil, 5 are as follows: intermediate base, 6: rectangle
Hollow metal spool, 7 are as follows: the hollow pipeline in metal spool, 8 be water inlet, and 9 be water outlet, and 10 be water inlet system, and 11 is out
Water system.
Specific embodiment:
As shown in Figure 1, the present invention compensates heating to intermediate base 5 by electromagnetic induction coil 4 to improve stocking matter
Amount.This method is suitable for the rolling of square billet and rectangular bloom.
1~3 group of electromagnetic induction coil 4, electromagnetism are set between roughing mills or between roughing mills and mm finishing mill unit
The axial direction of induction coil 4 is the traffic direction of intermediate base 5, and electromagnetic induction coil 4 is arranged on the operating path of intermediate base 5, in
Between base 5 by a frame or a few frame roughing mills rolling after enter electromagnetic induction coil 4 in heated, intermediate base 5 pass through electromagnetism
During induction coil 4, the heating power of electromagnetic induction coil 4 gradually linearly increases, with reach from the head of intermediate base 5 to
The rated power of the effect that Tail-heating amplitude gradually increases, electromagnetic induction coil 4 is 3000~10000KWh, and frequency is
300~1000HZ, the number of turns are 10~50 circles, and turn-to-turn is away from for 8~12mm.
Electromagnetic induction coil 4 is formed by 6 coiling of metal spool that section is hollow, rectangular, and the sectional view of metal spool 6 is such as
Shown in Fig. 2, the section specification of the metal spool 6 of the hollow, rectangular is (50~70) mm × (20~40) mm, metal spool
Wall thickness is 5~10mm.In electromagnetic induction coil use process, water flowing in the hollow pipeline 7 into the metal spool of hollow, rectangular
Cooling, the both ends of electromagnetic induction coil are separately connected inlet and outlet, and the temperature difference of water flow needs to be less than 20 in entery and delivery port
℃。
After compensating heating to intermediate base 5 using electromagnetic induction coil 4, rolling mill practice is arranged are as follows: slab goes out to add
Hot stove temperature reduces by 50~80 DEG C than original technique, is set as 1000~1050 DEG C, the time inside furnace ratio of slab in heating furnace
Original technique reduces by 5~10min, 60~65min is set as, between roughing mills or between roughing mills and mm finishing mill unit
1~3 group of electromagnetic induction coil 4 is set, and intermediate base 5 is transported into heating in electromagnetic induction coil 4, and intermediate base is in electromagnetic induction coil
The speed of service in 4 is 0.3~3m/s, when the head of intermediate base 5 enters electromagnetic induction coil 4, the power of electromagnetic induction coil 4
For 500~1500KWh, with the operation of intermediate base 5, the power of electromagnetic induction coil 4 is gradually increased, the tail portion of intermediate base 5
When leaving, the power of electromagnetic induction coil 4 increases to 3000~10000KWh.
In order to the influence of the irregular deformations to electromagnetic induction coil 4 such as eliminate nose that intermediate base 5 occurs, arch upward, in electricity
A pair of of straightening roll 3 is respectively arranged in the front and back of magnetic induction coil 4, and after aligning, the size of intermediate base 5 becomes regular smooth,
It can prevent intermediate base 5 from scratching electromagnetic induction coil 4.
In order to eliminate the influence of roll cooling water or de-scaling water to electromagnetic induction coil 4, in the front of electromagnetic induction coil 4
A pair of of water fender 2 is respectively set with rear, and each pair of water fender 2 is arranged perpendicular to intermediate about 5 base, between water fender 2 and intermediate base 5
Gap is 10~20mm, and water fender 2 can prevent from causing short circuit on roll cooling water or de-scaling water spray to electromagnetic induction coil 4.
The following examples are further illustrations of the invention, but the present invention is not limited thereto.
Embodiment 1:
As shown in Figure 1, the present invention compensates heating to intermediate base 5 by electromagnetic induction coil 4 to improve stocking matter
Amount.This method is suitable for the rolling of square billet and rectangular bloom.
3 groups of electromagnetic induction coils 4 are set between roughing mills and mm finishing mill unit, during the axial direction of electromagnetic induction coil 4 is
Between base 5 traffic direction, electromagnetic induction coil 4 is arranged on the operating path of intermediate base 5, and intermediate base 5 passes through a frame or a few framves
Enter in electromagnetic induction coil 4 after roughing mill rolling and heated, intermediate base 5 is during passing through electromagnetic induction coil 4, electricity
The heating power of magnetic induction coil 4 gradually linearly increases, and is gradually increased with reaching from the head of intermediate base 5 to Tail-heating amplitude
Effect, the rated power of electromagnetic induction coil 4 is 3000KWh, frequency 300HZ, and the number of turns is 10 circles, and turn-to-turn is away from for 8mm.
Electromagnetic induction coil 4 is formed by 6 coiling of metal spool that section is hollow, rectangular, and the sectional view of metal spool 6 is such as
Shown in Fig. 2, the section specification of the metal spool 6 of the hollow, rectangular is 50mm × 20mm, and the wall thickness of metal spool is 5mm.Electricity
In magnetic induction coil use process, water flowing is cooling in the hollow pipeline 7 into the metal spool of hollow, rectangular, electromagnetic induction coil
Both ends be separately connected water inlet 8 and water outlet 9, the temperature difference of water flow needs to be less than 20 DEG C in entery and delivery port.
After compensating heating to intermediate base 5 using electromagnetic induction coil 4, rolling mill practice is arranged are as follows: slab goes out to add
Hot stove temperature reduces by 50 DEG C than original technique, is set as 1050 DEG C, the time inside furnace of slab in heating furnace subtracts than original technique
Few 5min, is set as 65min, 3 groups of electromagnetic induction lines is arranged between roughing mills or between roughing mills and mm finishing mill unit
Circle 4, intermediate base 5 are transported into heating in electromagnetic induction coil 4, and the speed of service of the intermediate base in electromagnetic induction coil 4 is 3m/s,
When the head of intermediate base 5 enters electromagnetic induction coil 4, the power of electromagnetic induction coil 4 is 500KWh, with intermediate base 5
Operation, the power of electromagnetic induction coil 4 gradually increases, and when the tail portion of intermediate base 5 is left, the power of electromagnetic induction coil 4 increases
To 3000KWh.
In order to the influence of the irregular deformations to electromagnetic induction coil 4 such as eliminate nose that intermediate base 5 occurs, arch upward, in electricity
A pair of of straightening roll 3 is respectively arranged in the front and back of magnetic induction coil 4, and after aligning, the size of intermediate base 5 becomes regular smooth,
It can prevent intermediate base 5 from scratching electromagnetic induction coil 4.
In order to eliminate the influence of roll cooling water or de-scaling water to electromagnetic induction coil 4, in the front of electromagnetic induction coil 4
A pair of of water fender 2 is respectively set with rear, and each pair of water fender 2 is arranged perpendicular to intermediate about 5 base, between water fender 2 and intermediate base 5
Gap is 10mm, and water fender 2 can prevent from causing short circuit on roll cooling water or de-scaling water spray to electromagnetic induction coil 4.
The method heated to improve mill bar quality is compensated by induction coil according to what is provided by invention, using electromagnetic induction
Coil 4 is come after compensating heating to intermediate base 5, since the heating temperature of slab in heating furnace reduces, heating time is reduced,
Slab amount of oxidation loss can reduce by 30% or more, and the tendency of growing up of austenite grain delays or stops, and die level you can well imagine high by 1
Grade, due to intermediate base end to end, it is inside and outside carried out selective heating, the temperature difference of intermediate base end to end reduces by 100 DEG C or more, intermediate
Base surface and the internal temperature difference reduce by 80 DEG C or more.
Embodiment 2:
As shown in Figure 1, the present invention compensates heating to intermediate base 5 by electromagnetic induction coil 4 to improve stocking matter
Amount.This method is suitable for the rolling of square billet and rectangular bloom.
1 group of electromagnetic induction coil 4 is set between roughing mills, and the axial direction of electromagnetic induction coil 4 is the operation of intermediate base 5
Direction, electromagnetic induction coil 4 are arranged on the operating path of intermediate base 5, and intermediate base 5 is after a frame or the rolling of a few frame roughing mills
It is heated in into electromagnetic induction coil 4, intermediate base 5 is during passing through electromagnetic induction coil 4, electromagnetic induction coil 4
Heating power gradually linearly increase, to achieve the effect that the head from intermediate base 5 is gradually increased to Tail-heating amplitude, electromagnetism
The rated power of induction coil 4 is 10000KWh, and frequency 1000HZ, the number of turns is 50 circles, and turn-to-turn is away from for 12mm.
Electromagnetic induction coil 4 is formed by 6 coiling of metal spool that section is hollow, rectangular, and the sectional view of metal spool 6 is such as
Shown in Fig. 2, the section specification of the metal spool 6 of the hollow, rectangular is 70mm × 40mm, and the wall thickness of metal spool is 10mm.Electricity
In magnetic induction coil use process, water flowing is cooling in the hollow pipeline 7 into the metal spool of hollow, rectangular, electromagnetic induction coil
Both ends be separately connected water inlet 8 and water outlet 9, the temperature difference of water flow needs to be less than 20 DEG C in entery and delivery port.
After compensating heating to intermediate base 5 using electromagnetic induction coil 4, rolling mill practice is arranged are as follows: slab goes out to add
Hot stove temperature reduces by 80 DEG C than original technique, is set as 1000 DEG C, the time inside furnace of slab in heating furnace subtracts than original technique
Few 10min, is set as 60min, and 1~3 group of electromagnetism sense is arranged between roughing mills or between roughing mills and mm finishing mill unit
Coil 4 is answered, intermediate base 5 is transported into heating, the speed of service of the intermediate base in electromagnetic induction coil 4 in electromagnetic induction coil 4 and is
When the head of 0.3m/s, intermediate base 5 enter electromagnetic induction coil 4, the power of electromagnetic induction coil 4 is 1500KWh, with centre
The power of the operation of base 5, electromagnetic induction coil 4 gradually increases, when the tail portion of intermediate base 5 is left, the power of electromagnetic induction coil 4
Increase to 10000KWh.
In order to the influence of the irregular deformations to electromagnetic induction coil 4 such as eliminate nose that intermediate base 5 occurs, arch upward, in electricity
A pair of of straightening roll 3 is respectively arranged in the front and back of magnetic induction coil 4, and after aligning, the size of intermediate base 5 becomes regular smooth,
It can prevent intermediate base 5 from scratching electromagnetic induction coil 4.
In order to eliminate the influence of roll cooling water or de-scaling water to electromagnetic induction coil 4, before electromagnetic induction coil 4
A pair of of water fender 2 is respectively arranged in side and rear, and each pair of water fender 2 is arranged perpendicular to intermediate about 5 base, water fender 2 and intermediate base 5
Gap is 20mm, and water fender 2 can prevent from causing short circuit on roll cooling water or de-scaling water spray to electromagnetic induction coil 4.
The method heated to improve mill bar quality is compensated by induction coil according to what is provided by invention, using electromagnetic induction
Coil 4 is come after compensating heating to intermediate base 5, since the heating temperature of slab in heating furnace reduces, heating time is reduced,
Slab amount of oxidation loss can reduce by 40% or more, and the tendency of growing up of austenite grain delays or stops, and die level you can well imagine high by 1
Grade, due to intermediate base end to end, it is inside and outside carried out selective heating, the temperature difference of intermediate base end to end reduces by 100 DEG C or more, intermediate
Base surface and the internal temperature difference reduce by 50 DEG C or more.
Embodiment 3: comparative example
Steel rolling process process is that heating furnace-roughing de-scaling-roughing-finish rolling de-scaling-finish rolling-flat bed delivery chain is cold
But-batch-slow cooling.Casting blank section specification 165mm × 320mm, 1080~1120 DEG C of bringing-up section temperature in heating furnace, slab exists
Heating time in heating furnace is 70min, after slab goes out heating furnace, is rolled into roughing mills, flat by 3 vertical 4, totally 7 frame
Roughing mill rolling, into the temperature before roughing mills be 1080~1100 DEG C, 950~1000 DEG C of steel billet temperature after roughing, then into
Enter 7 frame flat seizing units and carries out finish rolling, 890~920 DEG C of finish rolling finishing temperature, coiling temperature are as follows: 630-680 DEG C, commercial stock is disconnected
Face specification is 2.5mm × 420mm.
Embodiment 1 and embodiment 2 use technology provided by the invention, and comparative example 3 is using traditional technology, originally
The Contrast on effect for inventing the technology and traditional technology that provide see the table below 1:
Embodiment 4
A kind of electromagnetic induction coil, electromagnetic induction coil 4 are formed by 6 coiling of metal spool that section is hollow, rectangular, gold
Belong to the sectional view of spool 6 as shown in Fig. 2, the section specification of the metal spool 6 of the hollow, rectangular is 50mm × 20mm, metal wire
The wall thickness of pipe is 5mm.
The rated power of electromagnetic induction coil be 3000~10000KWh, frequency be 300~1000HZ, the number of turns be 10~
50 circles, turn-to-turn is away from for 8~12mm.
The both ends of electromagnetic induction coil are separately connected water inlet 8 and water outlet 9, in electromagnetic induction coil use process, to
Water flowing is cooling in hollow pipeline 7 in the metal spool of hollow, rectangular, 15 DEG C of the temperature difference of water flow in inlet and outlet.
In order to the influence of the irregular deformations to electromagnetic induction coil 4 such as eliminate nose that intermediate base 5 occurs, arch upward, in electricity
A pair of of straightening roll 3 is respectively arranged in the front and back of magnetic induction coil 4, and after aligning, the size of intermediate base 5 becomes regular smooth,
It can prevent intermediate base 5 from scratching electromagnetic induction coil 4.
In order to eliminate the influence of roll cooling water or de-scaling water to electromagnetic induction coil 4, in the front of electromagnetic induction coil 4
A pair of of water fender 2 is respectively set with rear, and each pair of water fender 2 is arranged perpendicular to intermediate about 5 base, between water fender 2 and intermediate base 5
Gap is 10mm, and water fender 2 can prevent from causing short circuit on roll cooling water or de-scaling water spray to electromagnetic induction coil 4.
3 groups of electromagnetic induction coils 4 are set between roughing mills and mm finishing mill unit, during the axial direction of electromagnetic induction coil 4 is
Between base 5 traffic direction, electromagnetic induction coil 4 is arranged on the operating path of intermediate base 5, and intermediate base 5 passes through a frame or a few framves
Enter in electromagnetic induction coil 4 after roughing mill rolling and heated, intermediate base 5 is during passing through electromagnetic induction coil 4, electricity
The heating power of magnetic induction coil 4 gradually linearly increases, and is gradually increased with reaching from the head of intermediate base 5 to Tail-heating amplitude
Effect, the rated power of electromagnetic induction coil 4 is 3000KWh, frequency 300HZ, and the number of turns is 10 circles, and turn-to-turn is away from for 8mm.
Embodiment 5
Other with embodiment 4, the difference is that:
Electromagnetic induction coil 4 is formed by 6 coiling of metal spool that section is hollow, rectangular, and the sectional view of metal spool 6 is such as
Shown in Fig. 2, the section specification of the metal spool 6 of the hollow, rectangular is 70mm × 40mm, and the wall thickness of metal spool is 10mm.Electricity
In magnetic induction coil use process, water flowing is cooling in the hollow pipeline 7 into the metal spool of hollow, rectangular, electromagnetic induction coil
Both ends be separately connected water inlet 8 and water outlet 9,19 DEG C of the temperature difference of water flow in entery and delivery port.
In order to eliminate the influence of roll cooling water or de-scaling water to electromagnetic induction coil 4, before electromagnetic induction coil 4
A pair of of water fender 2 is respectively arranged in side and rear, and each pair of water fender 2 is arranged perpendicular to intermediate about 5 base, water fender 2 and intermediate base 5
Gap is 20mm, and water fender 2 can prevent from causing short circuit on roll cooling water or de-scaling water spray to electromagnetic induction coil 4.
1 group of electromagnetic induction coil 4 is set between roughing mills, and the axial direction of electromagnetic induction coil 4 is the operation of intermediate base 5
Direction, electromagnetic induction coil 4 are arranged on the operating path of intermediate base 5, and intermediate base 5 is after a frame or the rolling of a few frame roughing mills
It is heated in into electromagnetic induction coil 4, intermediate base 5 is during passing through electromagnetic induction coil 4, electromagnetic induction coil 4
Heating power gradually linearly increase, to achieve the effect that the head from intermediate base 5 is gradually increased to Tail-heating amplitude, electromagnetism
The rated power of induction coil 4 is 10000KWh, and frequency 1000HZ, the number of turns is 50 circles, and turn-to-turn is away from for 12mm.
Embodiment 6
Other with embodiment 4, the difference is that:
Electromagnetic induction coil 4 is formed by 6 coiling of metal spool that section is hollow, rectangular, and the sectional view of metal spool 6 is such as
Shown in Fig. 2, the section specification of the metal spool 6 of the hollow, rectangular is 60mm × 30mm, and the wall thickness of metal spool is 7mm.Electricity
In magnetic induction coil use process, water flowing is cooling in the hollow pipeline 7 into the metal spool of hollow, rectangular, electromagnetic induction coil
Both ends be separately connected water inlet 8 and water outlet 9,10 DEG C of the temperature difference of water flow in entery and delivery port.
In order to eliminate the influence of roll cooling water or de-scaling water to electromagnetic induction coil 4, before electromagnetic induction coil 4
A pair of of water fender 2 is respectively arranged in side and rear, and each pair of water fender 2 is arranged perpendicular to intermediate about 5 base, water fender 2 and intermediate base 5
Gap is 15mm, and water fender 2 can prevent from causing short circuit on roll cooling water or de-scaling water spray to electromagnetic induction coil 4.
1 group of electromagnetic induction coil 4 is set between roughing mills, and the axial direction of electromagnetic induction coil 4 is the operation of intermediate base 5
Direction, electromagnetic induction coil 4 are arranged on the operating path of intermediate base 5, and intermediate base 5 is after a frame or the rolling of a few frame roughing mills
It is heated in into electromagnetic induction coil 4, intermediate base 5 is during passing through electromagnetic induction coil 4, electromagnetic induction coil 4
Heating power gradually linearly increase, to achieve the effect that the head from intermediate base 5 is gradually increased to Tail-heating amplitude, electromagnetism
The rated power of induction coil 4 is 6000KWh, and frequency 700HZ, the number of turns is 30 circles, and turn-to-turn is away from for 10mm.
Claims (10)
1. a kind of electromagnetic induction coil, which is characterized in that electromagnetic induction coil is formed by metal spool coiling, electromagnetic induction coil
Both ends be separately connected inlet and outlet.
2. electromagnetic induction coil as described in claim 1, which is characterized in that the rated power of electromagnetic induction coil be 3000~
10000KWh, frequency are 300~1000HZ, and the number of turns is 10~50 circles, and turn-to-turn is away from for 8~12mm.
3. electromagnetic induction coil as described in claim 1, which is characterized in that the outer cross section of the metal spool is hollow square
Shape；The metal spool outer cross section specification is (50~70) mm × (20~40) mm, and the wall thickness of metal spool is 5~10mm.
4. the application method of electromagnetic induction coil as described in any one of claims 1-3, in electromagnetic induction coil use process,
Into the metal spool of hollow, rectangular, water flowing is cooling, and the both ends of electromagnetic induction coil are separately connected inlet and outlet, into and out of
The temperature difference of water flow is less than 20 DEG C in the mouth of a river.
5. a kind of equipment of intermediate base compensation heating, including 1~3 group of described in any item electromagnetic induction coil of claim 1-3,
Electromagnetic induction coil is arranged on the operating path of intermediate base, and intermediate base enters electromagnetism after a frame or the rolling of a few frame roughing mills
Heated in induction coil, intermediate base during passing through electromagnetic induction coil, the heating power of electromagnetic induction coil by
It is gradually linear to increase, to achieve the effect that gradually increase from the head of intermediate base to Tail-heating amplitude.
6. the equipment of base compensation heating as claimed in claim 5 intermediate, which is characterized in that between roughing mills or roughing
1~3 group of electromagnetic induction coil is set between unit and mm finishing mill unit, and the axial direction of electromagnetic induction coil is the operation side of intermediate base
To.
7. such as the equipment of intermediate base compensation heating described in claim 5 or 6, which is characterized in that before electromagnetic induction coil
A pair of of straightening roll (3) is respectively arranged in side and rear.
8. such as the equipment of the described in any item intermediate base compensation heating of claim 5-7, which is characterized in that in electromagnetic induction coil
Front and back a pair of of water fender (2) is respectively set.
9. the equipment of intermediate base compensation heating as claimed in claim 8, which is characterized in that each pair of water fender is perpendicular to intermediate base
The gap of arrangement up and down, water fender and intermediate base is 10~20mm.
10. a kind of compensate the method heated to improve mill bar quality using electromagnetic induction coil to intermediate base, feature exists
In,
After compensating heating to intermediate base using the described in any item electromagnetic induction coils of claim 1-3, work will be rolled
Skill setting are as follows: it is 1000~1050 DEG C that slab, which goes out furnace temp, and the time inside furnace of slab in heating furnace is 60~65min,
1~3 group of described in any item electromagnetism of claim 1-3 is set between roughing mills or between roughing mills and mm finishing mill unit
Induction coil, intermediate base are transported into heating in electromagnetic induction coil, and the speed of service of the intermediate base in electromagnetic induction coil is 0.3
~3m/s, when intermediate base head enters electromagnetic induction coil, the power of electromagnetic induction coil is 500~1500KWh, in
Between base operation, the power of electromagnetic induction coil gradually increases, and when intermediate base tail portion is left, the power of electromagnetic induction coil increases
To 3000~10000KWh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810821895.3A CN109092910B (en) | 2018-07-24 | 2018-07-24 | Electromagnetic induction coil compensation heating equipment and method for improving rolled material quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810821895.3A CN109092910B (en) | 2018-07-24 | 2018-07-24 | Electromagnetic induction coil compensation heating equipment and method for improving rolled material quality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109092910A true CN109092910A (en) | 2018-12-28 |
| CN109092910B CN109092910B (en) | 2019-12-24 |
Family
ID=64847320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810821895.3A Active CN109092910B (en) | 2018-07-24 | 2018-07-24 | Electromagnetic induction coil compensation heating equipment and method for improving rolled material quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109092910B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848385A (en) * | 2019-03-12 | 2019-06-07 | 上海大学 | A kind of device and method based on electromagnetic induction heating continuous casting constant temperature ejection |
| CN115228929A (en) * | 2022-07-29 | 2022-10-25 | 广西广盛新材料科技有限公司 | Temperature control method and device for strip steel production, terminal equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11123425A (en) * | 1997-10-27 | 1999-05-11 | Kawasaki Steel Corp | Hot rolling equipment and hot rolling method |
| CN101045242A (en) * | 2006-03-29 | 2007-10-03 | 宝山钢铁股份有限公司 | Optimization control method for intermediate blanket heating device |
| CN101792847A (en) * | 2009-02-02 | 2010-08-04 | 中冶赛迪工程技术股份有限公司 | Direct thermal treatment process technology after rolling steel plate |
| CN105200515A (en) * | 2015-09-24 | 2015-12-30 | 山东大学 | Induction coil for SiC single-crystal growth furnace and application thereof |
| CN205071351U (en) * | 2015-09-09 | 2016-03-02 | 海盐三鑫钢管有限公司 | Electromagnetic induction heating equipment of water -cool |
| CN106232250B (en) * | 2014-04-23 | 2018-07-20 | 东芝三菱电机产业系统株式会社 | Rolling system |
-
2018
- 2018-07-24 CN CN201810821895.3A patent/CN109092910B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11123425A (en) * | 1997-10-27 | 1999-05-11 | Kawasaki Steel Corp | Hot rolling equipment and hot rolling method |
| CN101045242A (en) * | 2006-03-29 | 2007-10-03 | 宝山钢铁股份有限公司 | Optimization control method for intermediate blanket heating device |
| CN101792847A (en) * | 2009-02-02 | 2010-08-04 | 中冶赛迪工程技术股份有限公司 | Direct thermal treatment process technology after rolling steel plate |
| CN106232250B (en) * | 2014-04-23 | 2018-07-20 | 东芝三菱电机产业系统株式会社 | Rolling system |
| CN205071351U (en) * | 2015-09-09 | 2016-03-02 | 海盐三鑫钢管有限公司 | Electromagnetic induction heating equipment of water -cool |
| CN105200515A (en) * | 2015-09-24 | 2015-12-30 | 山东大学 | Induction coil for SiC single-crystal growth furnace and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848385A (en) * | 2019-03-12 | 2019-06-07 | 上海大学 | A kind of device and method based on electromagnetic induction heating continuous casting constant temperature ejection |
| CN115228929A (en) * | 2022-07-29 | 2022-10-25 | 广西广盛新材料科技有限公司 | Temperature control method and device for strip steel production, terminal equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109092910B (en) | 2019-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101609174B1 (en) | Hot Rolled Silicon Steel Producing Method | |
| CN109433826B (en) | Medium-thin slab continuous casting and rolling unit and production method thereof | |
| US20090301157A1 (en) | Method of and apparatus for hot rolling a thin silicon-steel workpiece into sheet steel | |
| CN108526221A (en) | A kind of mild steel continuous casting and rolling production line and its production technology | |
| JP2009513360A (en) | Method and hot rolling line for hot rolling of introduced material | |
| TW200927313A (en) | Method and apparatus for producing strips of silicon steel or multi-phase steel | |
| CN101293257A (en) | Process for manufacturing hot rolled steel strips by using compaction type continuous casting and rolling technique | |
| JP2014521517A (en) | A method for pre-controlling the shape of the head and tail of a continuously cast slab to reduce the amount of cutting of the head and tail of a hot rolled intermediate slab | |
| RU2003106118A (en) | METHOD FOR PRODUCING THIN FLAT PRODUCTS AND INSTALLATION FOR ITS IMPLEMENTATION | |
| CA1250904A (en) | Inductive edge heating of hot-worked strip material and the like | |
| CN101293258A (en) | Process for manufacturing hot rolled steel strips by continuous casting and rolling middle bar strip | |
| CN103551394A (en) | Control method for side reverse tilting on thickness profile of low-silicon non-oriented silicon steel | |
| CN109092910A (en) | A kind of method electromagnetic induction coil compensation heating equipment and its improve mill bar quality | |
| CN1978080A (en) | Band-steel producing process EPS | |
| JP4055440B2 (en) | Direct-rolling method for continuous cast slabs | |
| CN103276286A (en) | Production method of X80 pipeline steel strip with thickness of 6-10 mm | |
| CN110004359B (en) | High-uniformity longitudinal and transverse toughness wide steel plate and TMCP (thermal mechanical control processing) process production method thereof | |
| CN1640569A (en) | Direct rolling process for heavy-medium plate billet continuous casting-rolling mill set | |
| CN204276517U (en) | A kind of production line that can replace conventional broadband steel hot continuous rolling | |
| CN110052588B (en) | Microalloyed steel casting blank corner transverse crack control process and crystallizer | |
| JP3418739B2 (en) | Continuous casting hot rolling equipment and continuous casting hot rolling method | |
| CN109092895B (en) | Steel bar continuous casting and rolling system and steel bar continuous casting and rolling production method | |
| CN113695403B (en) | Endless rolling method based on temperature uniform control | |
| CN102343358B (en) | For the manufacture of the casting of elongated metal rolled products and continuous rolling method and equipment | |
| CN210023245U (en) | System for producing hot formed steel by continuous casting and rolling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210625 Address after: 271100 Shuangquan Road, Gangcheng District, Jinan City, Shandong Province Patentee after: LAIGANG GROUP YINSHAN SHAPED STEEL Co.,Ltd. Address before: 271104 No.99, Fuqian street, Gangcheng District, Laiwu City, Shandong Province Patentee before: SHANDONG IRON AND STEEL Co.,Ltd. |
|
| TR01 | Transfer of patent right |